Histological parameter | Score, n (%) | ||||||||
0 | 1 | 2 | 3 | p Value | |||||
IGM | TBM | IGM | TBM | IGM | TBM | IGM | TBM | ||
Epithelioid histiocytes | 0 (0) | 0 (0) | 6 (18) | 4 (14) | 17 (52) | 21 (72) | 10 (30) | 4 (14) | 0.45 |
Lymphocytes | 0 (0) | 0 (0) | 1 (3) | 4 (14) | 18 (55) | 18 (62) | 14 (42) | 7 (24) | 0.06 |
Neutrophils | 2 (6) | 0 (0) | 7 (21) | 12 (41) | 17 (52) | 13 (45) | 7 (21) | 4 (14) | 0.43 |
Eosinophils | 21 (64) | 3 (10) | 9 (27) | 21 (72) | 2 (6) | 4 (14) | 1 (3) | 1 (4) | <0.01 |
Plasma cells | 0 (0) | 0 (0) | 9 (27) | 14 (48) | 12 (36) | 14 (48) | 12 (37) | 1 (4) | <0.01 |
Granuloma, vague | 11 (33) | 11 (38) | 20 (61) | 17 (59) | 1 (3) | 1 (3) | 1 (3) | 0 (0) | 0.51 |
Granuloma, well-formed | 20 (61) | 18 (62) | 11 (33) | 10 (34) | 1 (3) | 0 (0) | 1 (3) | 1 (4) | 0.84 |
Giant cells, Langhans type | 22 (67) | 20 (68) | 10 (30) | 7 (24) | 0 (0) | 1 (4) | 1 (3) | 1 (4) | 0.91 |
Giant cells, non-Langhans type | 23 (70) | 19 (66) | 6 (18) | 3 (10) | 3 (9) | 6 (20) | 1 (3) | 1 (4) | 0.45 |
Fibrosis | 11 (33) | 4 (14) | 17 (52) | 12 (41) | 3 (9) | 11 (38) | 2 (6) | 2 (7) | 0.02 |
Absent | Present | ||||||||
Necrosis | 31 (94) | 17 (59) | 2 (6) | 12 (41) | <0.01 | ||||
Calcification | 33 (100) | 28 (97) | 0 (0) | 1 (3) | 0.29 |
IGM, idiopathic granulomatous mastitis; TBM, tuberculous mastitis.